Spring retainer



FIG. 1 is a front, top perspective view of a spring retainer showing our new design;

FIG. 2 is a top view of the spring retainer of FIG. 1;

FIG. 3 is a bottom view of the spring retainer of FIG. 1;

FIG. 4 is a side elevation view of the spring retainer of FIG. 1; and,

FIG. 5 is a sectional view along line 5-5 of the spring retainer of FIG. 2.

The broken line representations of items in FIGS. 1-5 are for purposes of illustration only, and form no part of the claimed design. 

CLAIM The ornamental design for a spring retainer, as shown and described. 